public static bool TryParse(byte[] packetBytes, out AbstractPacketBase packet)
{
var publicFlags = packetBytes[0];
var index = 1;
var versionFlag = (publicFlags & (1 << 0)) != 0;
var resetFlag = (publicFlags & (1 << 1)) != 0;
var cidFlag1 = (publicFlags & (1 << 2)) != 0;
var cidFlag2 = (publicFlags & (1 << 3)) != 0;
var pnFlag1 = (publicFlags & (1 << 4)) != 0;
var pnFlag2 = (publicFlags & (1 << 5)) != 0;
ulong?connectionId;
if (cidFlag1 && cidFlag2)
{
connectionId = BitConverter.ToUInt64(packetBytes, index);
index += 8;
}
else if (!cidFlag1 && cidFlag2)
{
connectionId = BitConverter.ToUInt32(packetBytes, index);
index += 4;
}
else if (cidFlag1)
{
connectionId = packetBytes[1];
index += 1;
}
else
{
connectionId = null;
}
uint?version;
if (versionFlag)
{
version = BitConverter.ToUInt32(packetBytes, index);
index += 4;
}
ulong packetNumber;
if (pnFlag1 && pnFlag2)
{
var ba = new byte[8];
Array.Copy(packetBytes, index, ba, 2, 6);
packetNumber = BitConverter.ToUInt64(ba, 0);
index += 6;
}
else if (!pnFlag1 && pnFlag2)
{
packetNumber = BitConverter.ToUInt32(packetBytes, index);
index += 4;
}
else if (pnFlag1)
{
packetNumber = BitConverter.ToUInt16(packetBytes, index);
index += 2;
}
else
{
packetNumber = packetBytes[index];
index += 1;
}
var rp = new RegularPacket(connectionId, packetNumber, null);
var payloadBytes = new byte[packetBytes.Length - index];
Array.Copy(packetBytes, index, payloadBytes, 0, payloadBytes.Length);
rp.FromByteArray(payloadBytes);
packet = rp;
return(true);
}
public static bool TryParse(byte[] packetBytes, out AbstractPacketBase packet)
{
var publicFlags = packetBytes[0];
var index = 1;
var versionFlag = (publicFlags & (1 << 0)) != 0;
var resetFlag = (publicFlags & (1 << 1)) != 0;
var cidFlag1 = (publicFlags & (1 << 2)) != 0;
var cidFlag2 = (publicFlags & (1 << 3)) != 0;
var pnFlag1 = (publicFlags & (1 << 4)) != 0;
var pnFlag2 = (publicFlags & (1 << 5)) != 0;
ulong? connectionId;
if (cidFlag1 && cidFlag2)
{
connectionId = BitConverter.ToUInt64(packetBytes, index);
index += 8;
}
else if (!cidFlag1 && cidFlag2)
{
connectionId = BitConverter.ToUInt32(packetBytes, index);
index += 4;
}
else if (cidFlag1)
{
connectionId = packetBytes[1];
index += 1;
}
else
connectionId = null;
uint? version;
if (versionFlag)
{
version = BitConverter.ToUInt32(packetBytes, index);
index += 4;
}
ulong packetNumber;
if (pnFlag1 && pnFlag2)
{
var ba = new byte[8];
Array.Copy(packetBytes, index, ba, 2, 6);
packetNumber = BitConverter.ToUInt64(ba, 0);
index += 6;
}
else if (!pnFlag1 && pnFlag2)
{
packetNumber = BitConverter.ToUInt32(packetBytes, index);
index += 4;
}
else if (pnFlag1)
{
packetNumber = BitConverter.ToUInt16(packetBytes, index);
index += 2;
}
else
{
packetNumber = packetBytes[index];
index += 1;
}
var rp = new RegularPacket(connectionId, packetNumber, null);
var payloadBytes = new byte[packetBytes.Length - index];
Array.Copy(packetBytes, index, payloadBytes, 0, payloadBytes.Length);
rp.FromByteArray(payloadBytes);
packet = rp;
return true;
}